This is the sequel to contest #1, where my dad's driving in his '06 Corolla was scrutinized.

After seeing his ugly results (22.4 mpg - sub/urban driving only, in a decidedly non-hypermiling fashion), my mom stepped up to the plate and asked if I'd put a ScanGauge in her car. I double checked with her on the weekend, and she's a go. Set it up Sunday evening.

(Note: it's out of sight.)

So, you've got until next Sunday evening. As with last time, the person whose guess is closest to the actual fuel economy after a week of driving wins a free Ecomodder window cling.